The Trinity Triathlon, developed in association with Crystal Palace Triathletes, is a legacy event from the 2012 Olympics.

Named British Triathlon Children’s Event of the Year (2016), and London Region Children’s Event of the Year on three occasions, the event is open to boys and girls aged 6 to 19.

Each year the Triathlon attracts over 500 competitors from all over the south of England.

From elite athletes, many of whom are in the GB squad, to first-time triathletes, our Trinity Triathlon is enjoyed by all.  With excellent pre-race information, and support and marshaling available on race day, all triathletes can enjoy a fantastic day!


This year’s triathlon takes place on 30 June

2019 entries are now closed. 

Please note: As the cycle phase is on a closed London Red Route this phase must finish by 11am. Registration opens at 6am and Juniors start their race at 7am.

Read full competitor information.

Contact us

Trinity Triathlon is sanctioned and approved by British Triathlon.


Bike Route                                                                   Run Route